Abstract: An electronic glasses includes a lens frame, a first temple, a second temple, an electronic device and an audio I/O device. The Hall sensor is disposed at one of the lens frame, the first template, and the second temple. The audio I/O device is disposed at another of the lens frame, the first temple and the second temple, and provided with a magnetic element. The Hall sensor provides a first signal for the electronic device when the first temple and/or the second temple are folded to make the Hall sensor and the audio I/O device close to each other, and the Hall sensor provides a second signal for the electronic device when the first temple or the second temple are unfolded to make the Hall sensor and the audio I/O device be away from each other.